Laser surveying system having a function of marking reference points

A laser surveying system comprising:

• a laser oscillator for projecting a laser beam toward at least one reflector target;
• a laser measuring unit attached to said laser oscillator for receiving a laser beam projected by said laser oscillator and reflected by a laser target and effecting distance and angular measurements with reference to the received laser beam and outputting surveying data based on said measurements;
• a laser projector projecting a laser beam to a working face and deflecting the laser beam vertically and horizontally to form a laser spot pattern on the working face so as to optically indicate reference points on the working face, said laser projector being operable independently of said laser oscillator and said laser measuring unit for forming the laser spot pattern on the working face;
• and
• a controller unit operably connected to said laser means and said laser projector for determining spot data from the surveying data outputted from said laser measuring unit and predetermined design data and for controlling said laser projector in accordance with the thus determined spot data.